Urban Space: The Phenomena of Unfinished in the Cities of Montenegro

Throughout the history of civilisation and architecture, the phenomenon of unfinished has been constantly present. Many historical and sociopolitical developments have caused some buildings and urban areas never to be completed. Nevertheless, these “structures”, although “mistakes of the past”, have continued to live spontaneously, being integrated into the urban fabric of the city. They have often become parts of the public space, as “mutants”, and a constant inspiration for architects and artists. There are many such examples in the territory of Montenegro: Ulcinj, Risan, Budva, Pluzine, Niksic, etc. The Revolution Memorial Hall building in Niksic, an unfinished concrete and steel mega-structure – “mega-unfinishedness” (“a similar structure was not built in the former SFRY”), is a good example of it. Today, this unfinished “dead space” continues to “live” by generating new “events in space”, from “kiosk size businesses” to the idea of being simply “buried”, turning thus into a “live monument”

Generation and manipulation of nonclassical light using photonic crystals

Photonic crystal cavities can localize light into nanoscale volumes with high quality factors. This permits a strong interaction between light and matter, which is important for the construction of classical light sources with improved properties (e.g., low threshold lasers) and of nonclassical light sources (such as single and entangled photon sources) that are crucial pieces of hardware of quantum information processing systems. This article will review some of our recent experimental and theoretical results on the interaction between single quantum dots and photonic crystal cavity fields, and on the integration of multiple photonic crystal devices into functional circuits for quantum information processing.Comment: 6 pages, 6 figures; replaced with revised versio

Local temperature control of photonic crystal devices via micron-scale electrical heaters

We demonstrate a method to locally control the temperature of photonic crystal devices via micron-scale electrical heaters. The method is used to control the resonant frequency of InAs quantum dots strongly coupled to GaAs photonic crystal resonators. This technique enables independent control of large ensembles of photonic devices located on the same chip at tuning speed as high as hundreds of kHz

Two-dimensional coupled photonic crystal resonator arrays

We present the design and fabrication of photonic crystal structures exhibiting electromagnetic bands that are flattened in all crystal directions, i.e., whose frequency variation with wavevector is minimized. Such bands can be used to reduce group velocity of light propagating in arbitrary crystal direction, which is of importance for construction of miniaturized tunable optical delay components, low-threshold photonic crystal lasers, and study of nonlinear optics phenomena.Comment: 8 pages text and 3 figures on 3 pages. Published on Appl. Phys. Lett. 200

Photonic Crystal Cavities in Silicon Dioxide

One dimensional nano-beam photonic crystal cavities fabricated in silicon dioxide are considered in both simulation and experiment. Quality factors of over 10^4 are found via simulation, while quality factors of over 5*10^3 are found in experiment, for cavities with mode volumes of 2.0 cubic wavelengths (in oxide) and in the visible wavelength range (600-716nm). The dependences of the cavity quality factor and mode volume for different design parameters are also considered.Comment: 4 pages, 3 figure